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Piscanc
added gt2560 board, please correct if i mistyped any of the info :)

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Thank you for your answer, but what models i put in the chart?

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RADDS says that it is compatible with HD44780, what does this mean? What models?

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dc42
It's not so much the baud rate (unless you are looking at file upload speed to the SD card - see later), it's whether the USB interface has flow control. If it doesn't, then the host program has to wait for an "OK" response after each command, or at best after a few commands. General-purpose operating systems such as Windows and Linux can't schedule programs that do this efficiently when there are competing demands for processor time. That's one of the reasons why most people using 8-bit boards print from SD card, except for those using a dedicated host such as Octoprint. [The other reason is so that your print continues even if your PC decides to go to sleep, crashes, decides to install a new version of Windows etc.]

This brings me to my next suggestion. You might also want to add a column for the speed of uploading files to the SD card by whatever means the board provides - normally USB and/or network. This affects whether it is practical to upload files to your printer's SD card from your PC, or whether you need to remove the SD card from the printer, put it in your PC, copy your gcode file to it, eject it, and put it back in your printer.

Your drivers list could do with a row for the TMC2660 drivers used on the Duet WiFi, perhaps with a note that they are not available as plug-in drivers (one reason for that is because they have to be initialised using SPI).

PS - all 8-bit boards using the ATmega2560 don't have a native USB interface (the sort with flow control), they use USB-to-serial. I think I once saw an 8-bit board using the AT90USB1286 or AT90USB1287 that did have native USB, however boards like that with only 128Mb flash memory are out of favour because Marlin won't fit on them in some configurations. All the 32-bit boards I know of do have native USB.

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dc42
Your drivers list could do with a row for the TMC2660 drivers used on the Duet WiFi, perhaps with a note that they are not available as plug-in drivers (one reason for that is because they have to be initialised using SPI).

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o_lampe

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dc42
Your drivers list could do with a row for the TMC2660 drivers used on the Duet WiFi, perhaps with a note that they are not available as plug-in drivers (because they have to be initialized using SPI).

Small correction here: Marlin RC8 has an SPI setup routine for TMC2130 and TMC26xx. Not sure if there is a TMC26xx plugin driver available yet...

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dc42
Your drivers list could do with a row for the TMC2660 drivers used on the Duet WiFi, perhaps with a note that they are not available as plug-in drivers (because they have to be initialized using SPI).

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Dust
Your missing one important column (from my point of view)

usb speed, most are limited to serial speeds, but others have virtual uarts and run full (ish) usb2 speed.

The result of this is that some are dead slow and can run out of buffers on curves and other high detail parts, they also need the firmware and software to match baud rates. Others use full usb speed and just ignore baud rate settings